Question: What was the inception date of Madama Butterfly in 1901-0-0?
Paraphrase: Which date is the origin of Madama Butterfly in 1901-0-0?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q19005 p:P571 ?s . ?s ps:P571 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1901')) }